diff options
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index ac88e301f221..8760b4e9ade6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -381,6 +381,24 @@ static const struct hns3_rx_ptype hns3_rx_ptype_tbl[] = { #define HNS3_INVALID_PTYPE \ ARRAY_SIZE(hns3_rx_ptype_tbl) +static void hns3_dma_map_sync(struct device *dev, unsigned long iova) +{ + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); + struct iommu_iotlb_gather iotlb_gather; + size_t granule; + + if (!domain || !iommu_is_dma_domain(domain)) + return; + + granule = 1 << __ffs(domain->pgsize_bitmap); + iova = ALIGN_DOWN(iova, granule); + iotlb_gather.start = iova; + iotlb_gather.end = iova + granule - 1; + iotlb_gather.pgsize = granule; + + iommu_iotlb_sync(domain, &iotlb_gather); +} + static irqreturn_t hns3_irq_handle(int irq, void *vector) { struct hns3_enet_tqp_vector *tqp_vector = vector; @@ -1728,7 +1746,9 @@ static int hns3_map_and_fill_desc(struct hns3_enet_ring *ring, void *priv, unsigned int type) { struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; + struct hnae3_handle *handle = ring->tqp->handle; struct device *dev = ring_to_dev(ring); + struct hnae3_ae_dev *ae_dev; unsigned int size; dma_addr_t dma; @@ -1760,6 +1780,13 @@ static int hns3_map_and_fill_desc(struct hns3_enet_ring *ring, void *priv, return -ENOMEM; } + /* Add a SYNC command to sync io-pgtale to avoid errors in pgtable + * prefetch + */ + ae_dev = hns3_get_ae_dev(handle); + if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3) + hns3_dma_map_sync(dev, dma); + desc_cb->priv = priv; desc_cb->length = size; desc_cb->dma = dma; |